EP 3341256 A1 20180704 - A METHOD AND A SYSTEM FOR CONTROLLING VEHICLE SPEED
Title (en)
A METHOD AND A SYSTEM FOR CONTROLLING VEHICLE SPEED
Title (de)
VERFAHREN UND SYSTEM ZUR STEUERUNG DER FAHRZEUGGESCHWINDIGKEIT
Title (fr)
PROCÉDÉ ET SYSTÈME DE COMMANDE DE VITESSE DE VÉHICULE
Publication
Application
Priority
EP 2015069727 W 20150828
Abstract (en)
[origin: WO2017036491A1] The invention relates to a device and a method for controlling vehicle speed in a vehicle (100) equipped with cruise control when the vehicle is travelling downhill. The method involves driving a vehicle downhill with the cruise control set to a first brake set speed (vs1) value; detecting a current vehicle speed; applying a brake torque using at least one auxiliary brake (111) to maintain the first brake set speed (vs1), which brake torque is dependent on a currently engaged gear; detecting a manual request for a downshift from a currently engaged gear to a lower gear, in order to decrease vehicle speed; and determining if a downshift is permissible at the current vehicle speed. If a control unit determines that a downshift is not permissible, then the control unit is automatically arranged to apply a brake torque using at least a vehicle service brake (131, 132, 133) to retard the vehicle speed; to retard the vehicle from a current, first vehicle speed to a lower, second vehicle speed at which a downshift to a lower gear is permissible; and to perform a downshift to a lower gear when the second vehicle speed is reached. The cruise control brake set speed is set to a second brake set speed (vS2) that is lower than the first cruise control brake set speed value; and a brake torque using at least the auxiliary brake (111) is applied if a detected current vehicle speed exceeds the second brake set speed (vS2).
IPC 8 full level
B60W 30/14 (2006.01); B60W 10/04 (2006.01); B60W 30/188 (2012.01); B60W 30/19 (2012.01)
CPC (source: EP US)
B60T 7/12 (2013.01 - EP US); B60W 10/11 (2013.01 - US); B60W 10/18 (2013.01 - EP US); B60W 30/143 (2013.01 - EP US); B60W 30/1884 (2013.01 - EP US); B60W 30/19 (2013.01 - EP US); B60T 2201/04 (2013.01 - EP US); B60W 30/18136 (2013.01 - US); B60W 2030/18081 (2013.01 - US); B60W 2510/184 (2013.01 - US); B60W 2520/10 (2013.01 - US); B60W 2540/16 (2013.01 - EP US); B60W 2552/15 (2020.02 - EP US); B60W 2710/1005 (2013.01 - EP US); B60W 2710/18 (2013.01 - US); B60W 2720/10 (2013.01 - US)
Citation (search report)
See references of WO 2017036491A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2017036491 A1 20170309; CN 107949512 A 20180420; CN 107949512 B 20210723; EP 3341256 A1 20180704; EP 3341256 B1 20190320; JP 2018532634 A 20181108; JP 6596151 B2 20191023; US 10647320 B2 20200512; US 2018244269 A1 20180830
DOCDB simple family (application)
EP 2015069727 W 20150828; CN 201580082677 A 20150828; EP 15767427 A 20150828; JP 2018511063 A 20150828; US 201515755185 A 20150828